An object of the present invention is to elucidate a collagenpeptide effective for causing dipeptides or tripeptides serving as theactive component to enter the blood, and thus to reduce the requiredintake thereof. According to the present invention, a collagenpeptide composition obtained by digesting collagen or gelatin withprotease is provided, wherein:(a) the ratio of hydroxyproline to total of amino acid residues at thesecond position from the N terminus of the peptides in thecomposition is 2 mol% or more and 20 mol% or less, and the ratio ofglycine to total of amino acid residues at the third position from the Nterminus of the peptides in the composition is 20 mol% or more and 50mol% or less； and(b) the average molecular weight is 500 or more and 2000 or less.
